boresight fixture assembly

例句：

1. 1. The main camera lens is mounted on the boresight fixture assembly.
   主要镜头安装在主镜支架上。
2. 2. The engineers assembled the boresight fixture assembly before starting the project.
   工程师们在开始项目之前组装了主镜支架。
3. 3. The boresight fixture assembly was designed to align the camera with the target.
   主镜支架设计用来将相机与目标对齐。